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An incompressible steady ?ow of a ?uid, such as a strati?ed ?ow of salt water (as in the isthmus between a fresh body of water and a body of salt water), ?ows in a channel with a sudden change in the height of the channel bottom (this allows for nonzero u and v). Assume no variation in the z-direction and write the two equations that result from the continuity equation. (Experiments show that a stagnant region of ?uid exists in front of a sudden increase in the height of the bottom of a channel in a strati?ed ?ow. This phenomenon causes the buildup of smog in Los Angeles when air ?ows toward the city, but substantial smog does not appear in the more densely populated New York City. There are mountains east of Los Angeles but not west of New York.)
Two fully annealed cylindrical specimens of an alloy are to be hardened by reducing their (always circular) cross-sections in an extrusion process. For one specimen, the initial and post-deformation radii are 15mm and 12 mm, respectively.
steam enters an adiabatic turbine steadily at 8 mpa and 500 c through an inlet with cross-section area of 0.041767 m2
An air cushion vehicle is supported by forcing air into the chamber created by a skirt around the periphery of the vehicle as shown in Fig. P3.106. The air escapes through the 1.7-in. clearance between the lower end of the skirt and the ground (or wa..
a heat pump is proposed that uses 50f ground water to heat a house to 70f. the groundwater experiences a temperature
a piston cylinder device contains .5 lbs of water initially at 120 pso and a volume of 2ft3. a total of 200btu of heat
an engineering student considers using a fan as a levitation demonstation. she plans to face the box-enclosed fanso the
A US Department of Energy article states that a leak of one drip of hot water per second can cost $1.00 per month. Making reasonable assumptions about drop size and unit cost of energy, determine if this claim is reasonable.
air at 0.1 kgs is to be cooled from 140 c to 40 c in a heat exchanger. the coolant water is at 20c constant throughout
explore the n2nono2 equilibrium in ambient atmosphere p 1 atm t 25 oc after the oxides no and no2 have been produced
determine the no2 emissions rate lbhr from a steam plant that uses sugar mill waste 3300 btulb to generate 1000 lb
A 40 mm diameter hole is drilled 3 m deep into the steel shaft. When the two torque are applied, determine (a) the maximum shear stress in the shaft: and (b) the angle of rotation of the free end of the shaft. Use G= 83GPa for steel.
a 65 wt ni-35cu alloy is heated to temperature within the apha liqquid-phase region. if the compostiong of the alpha
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